In the example above, when a new value arrives from Reuters for the “Bond Turnover 2017”, I would like to recalculate the “Bond Turnover 2017” value and have all other dependant values (eg “TEST”, and “TEST2”) recalculated automatically and just be notifed via the ValueChanged or ValueSet events when this happens.

A comment is that the CalcQuick object will not have any way of knowing that a new value has arrived from your Reuter source unless that Reuter source raises an event when one of its values has changed. So, in the sample, a ReuterChanged event was added and is raised when a timer event changes the values provided by Reuter. In this way, you can listen for this event and force CalcQuick to recalculate when this changed event comes in.